First of all, I admire your persistence. I don't think the supplementary books are necessarily related, so I don't need to buy a set. But as far as I know, you did quite well in the five-year college entrance examination and the three-year simulated mathematics. Since you are a science student, I suggest you buy version B 20 1 1 for the following reasons:

1. First of all, the 20 1 1 version will not be available for a long time (I will make a math teaching aid after graduation, and it will be available in September at the latest). Compared with the 20 10 version, this year's college entrance examination questions and corresponding answers and analysis will be added;

2. As you said, the topic of version B will still be more difficult. Version A is a liberal arts student and version B is a science student.

Practice the questions in the book again and again, check and fill in the gaps, do the wrong questions again and again, summarize and summarize, and you will certainly benefit a lot. This is my experience. There is no shortcut to learning mathematics. 99% diligence+1% talent+good grades. Finally, I wish you good luck and get into your ideal university!